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Antlia ALP-T Golden Dual Band Filter - 36mm
Designed for astrophotography in highly-light polluted urban areas, the Antlia ALP-T Golden Dual Band Filter - 36mm (5nm) is recommended for use with one-shot colour (OSC) CMOS cameras.
- Especially useful for astrophotography in urban /city areas with high light pollution
- Transmits Red H-Alpha (Ha) and Blue-Green OIII Main Nebula Emission Lines
- Designed for use with one-shot color CMOS cameras
- Optical density (OD) suppression of 4.5 on unwanted visual wavelengths of 300-1100 nm
- IR/UV-Cut filter
- Suppressed artificial lighting / light pollution from Bortle Scale 1 to Bortle Scale 8
- Great performance at focal ratios greater than f/3, with contrast increasing as focal ratio increases
- Ultra-thin filter cell
AVAILABLE FOR SPECIAL ORDER
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For high-performance astronomical imaging.
With advanced multi-coatings, the Antlia ALP-T Golden Dual Band Filter - 36mm (5nm) maximises and isolates the transmission of the Blue-Green Oxygen III and Red H-Alpha (Ha) Nebula Emission Lines.
The Antlia ALP-T Golden Dual-Band Filter - 36mm (5nm) also features astronomical suppression of light pollution from artificial light created by sodium vapour / mercury vapour lamps. In addition, the ALP-T is great at suppressing natural light from atmospheric sky glow (neutral oxygen emission) and moonlight, and hence highly recommended for use in light-polluted urban areas.
You'll also spend less time in post-production, with each Antlia ALP-T Filter individually tested to create exceptional contrast for cleaner images and more effectively isolate those faint details in your astrophotographs.
EXERCISE CAUTION: NOT SUITABLE FOR SOLAR VIEWING: The Antlia ALP-T Golden Dual Band Filter - 36 (5nm) is not suitable for looking at the Sun. Serious eye damage may result.
Optics Central also offers a mounted variant of the Antlia ALP-T: the Antlia ALP-T Golden Dual Band Filter - 2" (5nm).
For telescopes with faster focal ratios (between f/3.6 and f/2.2), the Antlia Fast Golden Dual Band Filter - 2" or the Antlia Fast Golden Dual Band Filter - 36mm are more suitable.
Specifications
| Technical Specifications |
| FWHM | 5nm |
| Central Wavelength (Hydrogen-Alpha) | 656.3nm |
| Peak Transmission (Hydrogen-Alpha) | 90% |
| Central Wavelength (Oxygen III) | 500.7nm |
| Peak Transmission (Oxygen III) | 82% |
| Blocking | ≥ OD4.5 @ 300-1100nm |
| Filter Glass Thickness | 2mm +/- 0.05mm |
| Unmounted Filter | 36mm Diameter |
Antlia: Experts in Astronomy Filters
Antlia Astronomy Filters are built by Deep-Sky Photography Enthusiasts for Enthusiasts all around the globe. Antlia prides itself on producing a series of exceptional quality, fully multicoated narrowband, dual-band, planetary and LRGB filters for astrophotography, designed for use with a range of monochrome and colour DSLR, CMOS and CCD cameras.
Product Code: ALP-T-36